The highest level of “blending” is to be internally changeable (small, subtle movements that evade an attacker’s force and extend your own into his emptiness.) When mastered, your actions will be so deft that your results will seem like magic. To the extent which you are limited in your ability to change internally, you will need to move more grossly, making larger, more obvious motions through space. In other words, you will have to change externally. This will cause you to waste energy, take longer to complete actions, and require you to be more dynamic. As your skill increases, your changes will occur more within the space you currently occupy and require less displacement of your posture and position, making you more efficient and effective. I call this the spectrum of changeability.